18805056 has 28 divisors (see below), whose sum is σ = 49755552. Its totient is φ = 6268288.

The previous prime is 18805049. The next prime is 18805057. The reversal of 18805056 is 65050881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18805057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48780 + ... + 49163.

It is an arithmetic number, because the mean of its divisors is an integer number (1776984).

Almost surely, 2^18805056 is an apocalyptic number.

18805056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18805056 is an abundant number, since it is smaller than the sum of its proper divisors (30950496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18805056 is an equidigital number, since it uses as much as digits as its factorization.

18805056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97958 (or 97948 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 18805056 is about 4336.4796782644. The cubic root of 18805056 is about 265.9244136715.

The spelling of 18805056 in words is "eighteen million, eight hundred five thousand, fifty-six".